Operation Points of Large Computer Milling Processing Centers:
a. To simplify positioning and installation, each locating surface of the fixture relative to the processing origin of the machining center should have precise coordinate dimensions.
b. To ensure the consistency of the part installation orientation with the workpiece coordinate system selected in programming and the machine tool coordinate system direction, as well as for oriented installation.
c. The fixture should have as few elements as possible and high rigidity. The fixture should be as open as possible, and the spatial position of the clamping element should be as low as possible. The fixture installation should not interfere with the tool path, and the flatness of the bottom surface of the fixture in contact with the worktable must be guaranteed within 0.01-0.02mm. Recycled tin waste, surface roughness no more than Ra3.2um.
d. Ensure that all processing content is completed within the travel range of the spindle.
e. Try to complete all processing content in one setup. When it is necessary to change the clamping point, pay special attention not to destroy the positioning accuracy due to changing the clamping point. If necessary, explain this in the process document.
f. For machining centers with interchangeable worktables, because of the movement, lifting, lowering, and rotation actions of the worktable, the fixture design must prevent spatial interference between the fixture and the machine tool.
g. Can be disassembled in a short time and modified into fixtures suitable for new parts. Since the auxiliary time of the machining center has been compressed very short, the loading and unloading of the matching fixture cannot take up too much time.
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